Wang, Vincent Z., Pease, Trent, and Robinson, Sean (2012) Implications of selected parameter estimation schemes to reinforced concrete member reliability analysis with incomplete structural appraisal data. In: Proceedings of the 37th Conference on Our World in Concrete & Structures. 100037044. pp. 435-442. From: The 37th Conference on Our World in Concrete & Structures, 29-31 August 2012, Singapore.

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Abstract

The last decade has seen continuing research interest in formulating and developing structural appraisal techniques, and particularly in the multidisciplinary area of the methodologies and applications of structural health monitoring (SHM). A hard truth is that, despite the increasing level of sophistication of these techniques, the completeness of the structural appraisal data can by no means be guaranteed, and it is not uncommon that only incomplete structural appraisal data are practically available. The appraisal data missingness may be attributed to a series of causes, such as the malfunction in relevant data acquisition systems, irreversible data transfer error, and unscheduled power outage for online or real-time systems. Intertwined with the inherent variability especially in the properties of concrete, the occurrence of the appraisal data missingness further complicates the safety assessment of in-service reinforced concrete members and structures, and may perhaps considerably undermine the accuracy involved. Instead of struggling for a panacea to prevent the occurrence of the appraisal data missingness once and for all, the incompleteness of the structural appraisal data is conceded as a fait accompli in this study, and the applications of selected parameter estimation schemes to the incomplete appraisal data are evaluated and compared through the pertinent positive-semidefiniteness criterion and two additional quantities known as the additional information loss and the probability of noninformativeness. The emphasis of this study is to look at the sensitivity of the reliability analysis of in-service reinforced concrete members with respect to the appraisal data missingness.

Item ID:	26966
Item Type:	Conference Item (Research - E1)
ISBN:	978-981-07-2730-7
Keywords:	structural appraisal; reinforced concrete; reliability analysis; missing data; parameter estimation; sensitivity
Related URLs:	Publisher
Date Deposited:	23 May 2013 04:06
FoR Codes:	09 ENGINEERING > 0905 Civil Engineering > 090506 Structural Engineering @ 100%
SEO Codes:	97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 100%
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